1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* packet-socketcan.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_SOCKETCAN_H__
#define __PACKET_SOCKETCAN_H__
#include <epan/tvbuff.h>
#include <epan/packet_info.h>
#include <epan/proto.h>
/*
* Flags for CAN FD frames.
* They are in the FD Flags field of a CAN FD frame.
*
* CANFD_FDF is in that field. and always set, as well as being present
* but *never* set in what's at the location corresponding to that field
* in a CAN classic frame, so we can distinguish between CAN classic and
* CAN FD frames by testing that bit.
*/
#define CANFD_BRS 0x01 /* Bit Rate Switch (second bitrate for payload data) */
#define CANFD_ESI 0x02 /* Error State Indicator of the transmitting node */
#define CANFD_FDF 0x04 /* FD flag - if set, this is an FD frame */
/*
* Flags for CAN XL frames.
* They are in the Flags field of a CAN XL frame.
*
* CANXL_XLF is in that field, and always set. as well as being present
* but *never* set in what's the location corresponding to that field
* in a CAN classic or CAN FD frame, so we can distinguish between CAN
* XL and CAN classic/CAN FD frames by testing that bit.
*/
#define CANXL_XLF 0x80 /* XL flag - if set, this is an XL frame */
#define CANXL_SEC 0x01 /* Simple Extended Content */
/*
* CAN frame type.
*
* CAN_TYPE_CAN_CLASSIC is 0, and CAN_TYPE_CAN_FD is 1, so that the
* fd field behaves, for CAN classic and CAN FD frames, the same way
* that it did when it was a gboolean field that was FALSE for CAN classic
* frames and TRUE for CAN FD frames.
*/
#define CAN_TYPE_CAN_CLASSIC 0
#define CAN_TYPE_CAN_FD 1
#define CAN_TYPE_CAN_XL 2
/* Structure that gets passed between dissectors. */
typedef struct can_info {
guint32 id;
guint32 len;
guint fd;
guint16 bus_id;
} can_info_t;
/* controller area network (CAN) kernel definitions
* These masks are usually defined within <linux/can.h> but are not
* available on non-Linux platforms; that's the reason for the
* redefinitions below
*
* special address description flags for the CAN_ID */
#define CAN_EFF_FLAG 0x80000000 /* EFF/SFF is set in the MSB */
#define CAN_RTR_FLAG 0x40000000 /* remote transmission request */
#define CAN_ERR_FLAG 0x20000000 /* error frame */
#define CAN_FLAG_MASK (CAN_EFF_FLAG | CAN_RTR_FLAG | CAN_ERR_FLAG)
#define CAN_EFF_MASK 0x1FFFFFFF /* extended frame format (EFF) has a 29 bit identifier */
#define CAN_SFF_MASK 0x000007FF /* standard frame format (SFF) has a 11 bit identifier */
#define CAN_ERR_DLC 8 /* dlc for error message frames */
/* error class (mask) in can_id */
#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */
#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */
#define CAN_ERR_CTRL 0x00000004U /* controller problems / data[1] */
#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */
#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */
#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */
#define CAN_ERR_BUSOFF 0x00000040U /* bus off */
#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */
#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */
#define CAN_ERR_RESERVED 0x1FFFFE00U /* reserved bits */
/* error in CAN protocol (type) / data[2] */
#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */
#define CAN_ERR_PROT_BIT 0x01 /* single bit error */
#define CAN_ERR_PROT_FORM 0x02 /* frame format error */
#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */
#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */
#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */
#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */
#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */
#define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */
/* error in CAN protocol (location) / data[3] */
#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */
#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */
#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */
#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */
#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */
#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */
#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */
#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */
#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */
#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */
#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */
#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */
#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */
#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */
#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */
#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */
#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */
#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */
gboolean socketcan_call_subdissectors(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, struct can_info *can_info, const gboolean use_heuristics_first);
gboolean socketcan_set_source_and_destination_columns(packet_info* pinfo, can_info_t *caninfo);
/*
* CAN XL SDU types.
*/
#define CANXL_SDU_TYPE_CONTENT_BASED_ADDRESSING 0x01
#define CANXL_SDU_TYPE_CLASSICAL_CAN_AND_CAN_FD_MAPPED_TUNNELING 0x03
#define CANXL_SDU_TYPE_IEEE_802_3_MAC_FRAME_TUNNELLING 0x04
#define CANXL_SDU_TYPE_IEEE_802_3_MAC_FRAME_MAPPED_TUNNELING 0x05
#define CANXL_SDU_TYPE_CLASSICAL_CAN_MAPPED_TUNNELING 0x06
#define CANXL_SDU_TYPE_CAN_FD_MAPPED_TUNNELING 0x07
#endif /* __PACKET_SOCKETCAN_H__ */
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
|
